EP0347577B1 - Procédé pour traiter des masses échangeuses d'ions, en particulier pour traiter celles-ci après adoucissement et dessalement de solutions aqueuses - Google Patents

Procédé pour traiter des masses échangeuses d'ions, en particulier pour traiter celles-ci après adoucissement et dessalement de solutions aqueuses Download PDF

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Publication number
EP0347577B1
EP0347577B1 EP89108719A EP89108719A EP0347577B1 EP 0347577 B1 EP0347577 B1 EP 0347577B1 EP 89108719 A EP89108719 A EP 89108719A EP 89108719 A EP89108719 A EP 89108719A EP 0347577 B1 EP0347577 B1 EP 0347577B1
Authority
EP
European Patent Office
Prior art keywords
ion exchange
flow
ion exchanger
der
regeneration
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP89108719A
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German (de)
English (en)
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EP0347577A1 (fr
Inventor
Gerhard Dipl.-Chem. Dr. Ing. Kunz
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Individual
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Priority to AT89108719T priority Critical patent/ATE68996T1/de
Publication of EP0347577A1 publication Critical patent/EP0347577A1/fr
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J49/00—Regeneration or reactivation of ion-exchangers; Apparatus therefor
    • B01J49/75—Regeneration or reactivation of ion-exchangers; Apparatus therefor of water softeners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J49/00—Regeneration or reactivation of ion-exchangers; Apparatus therefor
    • B01J49/90—Regeneration or reactivation of ion-exchangers; Apparatus therefor having devices which prevent back-flow of the ion-exchange mass during regeneration

Definitions

  • the invention relates to a method for treating ion exchange compositions, in particular for regenerating them after softening and / or desalting aqueous solutions, in which a regeneration solution is passed through the ion exchange composition and after rinsing in a regenerated and washed state for a new softening or Desalination of aqueous solutions can be used again.
  • ion exchange compositions absorb the ionogenic dissociation components of the dissolved salts, such as, for example, calcimions, during loading processes, such as softening or desalination of aqueous solutions and therefore give the ions stored in the active centers of the ion exchange masses, for example sodium ions, to the aqueous solution.
  • the stored ions are exhausted, that is, in the example mentioned, all the stored sodium ions have been replaced by calcium ions, the ion exchange comes to a standstill.
  • the ion exchange mass i.e.
  • a solution of the ions to be stored such as a sodium chloride solution, is passed through the usually granular ion exchange mass, the ions absorbed by it during loading, in the example the calcium ions, being eluted and the sodium ions supplied by the regenerant solution are stored.
  • the regenerant solution is known to be passed through the ion exchange mass from top to bottom, that is to say in cocurrent.
  • the regeneration of an ion exchange mass in direct current has considerable disadvantages, as can be seen from the example of softening raw water:
  • the ion exchange mass which is usually layered in a filter container, is flowed through by the raw water and is loaded with calcium ions in the direction of flow, ie from top to bottom.
  • the residual hardness in the product water is lower, or the quality, the less calcium ions are contained in the lowest ion exchange layer through which water flows last.
  • the calcium ions highly enriched in the upper ion exchange layers are eluted from the regenerant solution and rinsed into the lowermost layers.
  • the entire ion exchange mass can be treated with a large excess of regenerating agent. These excess amounts are not used and are a considerable economic loss.
  • this object is achieved in terms of process engineering in that the liquid stream serving as the regenerant solution and as the rinsing solution is introduced discontinuously in the opposite direction to the loading direction into the bottom ion exchange masses of a filter container through which the loading liquid last flowed, in such a way that this liquid stream is divided into a sequence of intervals , which consist of a pulse flow and a subsequent pause time, and that these pulse flows are limited to a stroke height of at most ten times the largest grain diameter of the ion exchanger mass when the respective hydrodynamic lifting of the ion exchanger mass and that the pause time following the pulse flow until complete sedimentation the ion exchange mass raised during the pulse flow, in particular in the area of the liquid supply, is expanded and that it is only after this sedimentation that the ion exchange mass flows again through the impulse flow of the next interval, and that this sequence of intervals is continued until the end of the regenerative treatment and the rinsing, the liquid intermittently interfering with the entire ion exchange mass flows
  • the drawing shows the example of an arrangement of devices for carrying out the method according to the invention for the softening of raw water and the regenerative treatment of the ion exchange mass with sodium chloride solution, without restricting it to this alone. She shows:
  • a schematic arrangement of devices for performing the method according to the invention consisting of a filter container with ion exchange mass, supply and discharge lines for the liquid streams with associated shut-off devices and a storage container for the regenerant solution.
  • the ion exchange composition 2 layered in the filter container 1 is regeneratively treated with sodium chloride solution 3, which is located in the storage container 5 together with a supply of solid sodium chloride 4.
  • sodium chloride solution 3 which is located in the storage container 5 together with a supply of solid sodium chloride 4.
  • Concentrated sodium chloride solution 3 is drawn in by the injector 9 through the line 12 and the foot valve 13 and mixed with the driving water.
  • the sodium chloride solution diluted with the propellant in the pipeline 10 is the regenerating agent solution which emerges from the filter nozzle 11 at intervals in the form of impulse flows, followed by a pause with complete sedimentation of the ion exchange mass, into the bottom layer of the ion exchange mass 2 and then this ion exchange mass in the upflow flows through.
  • the regenerating agent solution After passing through the ion exchange mass 2, the regenerating agent solution largely gave off its sodium ions to the ion exchange mass and in turn absorbed their calcium ions, the concentration of calcium ions in the regenerating agent solution corresponding to the concentration equilibrium of the highly loaded ion exchange mass in the last layer 15.
  • This solution is channeled as waste water through the valve 16 into the channel 17, the valve 16 triggering the interval-like pulse currents with the respective pause times by appropriate control, in a manner known per se.
  • the table below shows the effectiveness of the method according to the invention using the example of two softening filters, filter A according to the invention and filter B being operated in a manner known hitherto.
  • the table contains information on the filter size and the results obtained Measured values after 200 consecutive loading cycles with the corresponding regeneration of the ion exchange mass:

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Treatment Of Water By Ion Exchange (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Claims (1)

1. Procédé pour le traitement de masses échangeuses d'ions disposées en couches sous forme granulaire dans un récipient filtrant et soumises en alternance à ces processus de chargement et de régénération, en particulier pour régénérer des solutions aqueuses après adoucissement ou dessalement, procédé dans lequel le flux de liquide qui sert de solution de régénération et de solution de rinçage est introduit en discontinu dans les masses échangeuses d'ions d'un récipient filtrant traversées en dernier par le fluide de chargement, en contre-courant du sens de chargement, et dans lequel le fluide traverse toute la masse échangeuse d'ions en courant ascendant et est évacué sous forme d'eau résiduaire après avoir traversé la dernière couche supérieure, ledit procédé étant caractérisé en ce que le flux de liquide servant de solution de régénération et de rinçage est divisé en une succession d'intervalles respectivement constitués par un écoulement pulsé et par un temps de repos qui le suit, que ces écoulements pulsés sont limités à une hauteur de levage d'au maximum dix fois le plus grand diamètre des grains de la masse échangeuse d'ions (2) lors du soulèvement hydrodynamique respectif de la masse échangeuse d'ions, que le temps de repos qui suit l'écoulement pulsé est étendu jusqu'à complète sédimentation de la masse échangeuse d'ions (2) soulevée au cours de l'écoulement pulsé, notamment dans la zone d'alimentation du liquide, que la masse échangeuse d'ions (2) n'est à nouveau traversée par l'écoulement pulsé de l'intervalle suivant qu'au terme de cette sédimentation et en ce qu'en outre, cette succession d'intervalles se poursuit jusqu'à la fin du traitement de régénération et du rinçage.
EP89108719A 1988-06-22 1989-05-16 Procédé pour traiter des masses échangeuses d'ions, en particulier pour traiter celles-ci après adoucissement et dessalement de solutions aqueuses Expired - Lifetime EP0347577B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89108719T ATE68996T1 (de) 1988-06-22 1989-05-16 Verfahren zum behandeln von ionenaustauschermassen, insbesondere zum regenerieren derselben nach enthaertung und entsalzung waessriger loesungen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3821036A DE3821036A1 (de) 1988-06-22 1988-06-22 Verfahren zum behandeln von ionenaustauschermassen, insbesondere zum regenerieren derselben nach enthaertung und entsalzung waessriger loesungen
DE3821036 1988-06-22

Publications (2)

Publication Number Publication Date
EP0347577A1 EP0347577A1 (fr) 1989-12-27
EP0347577B1 true EP0347577B1 (fr) 1991-10-30

Family

ID=6356994

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89108719A Expired - Lifetime EP0347577B1 (fr) 1988-06-22 1989-05-16 Procédé pour traiter des masses échangeuses d'ions, en particulier pour traiter celles-ci après adoucissement et dessalement de solutions aqueuses

Country Status (10)

Country Link
US (1) US5108616A (fr)
EP (1) EP0347577B1 (fr)
JP (1) JPH0286849A (fr)
AT (1) ATE68996T1 (fr)
AU (1) AU619561B2 (fr)
BR (1) BR8903045A (fr)
CA (1) CA1338241C (fr)
DE (2) DE3821036A1 (fr)
ES (1) ES2027810T3 (fr)
ZA (1) ZA894669B (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5348659A (en) * 1992-03-18 1994-09-20 Edr Acquisition Corp. Countercurrent regeneration process
US5346623A (en) * 1992-03-18 1994-09-13 Edr Acquisition Corp. Counter-current process for the rapid regeneration of ion exchange materials in an unrestrained bed
US5415767A (en) * 1992-05-28 1995-05-16 Judo Wasseraufbereitung Gmbh Water treatment plant
EP0599003A1 (fr) * 1992-11-26 1994-06-01 Gütling Gmbh Appareillage et procédé pour le régénération d'une installation d'échangeur d'ions
US5415765A (en) * 1993-04-07 1995-05-16 Kinetico Engineered Systems, Inc. Water treatment system
US5464530A (en) * 1993-12-08 1995-11-07 Stivers; Lewis E. Ion exchange methods and systems incorporating regenerant recycling
US5419819A (en) * 1994-03-17 1995-05-30 The United States Of America As Represented By The United States Department Of Energy Self-regenerating column chromatography
US5589058A (en) * 1994-10-28 1996-12-31 M. J. Bauer Company, Inc. Apparatus for treatment of water
US6348153B1 (en) 1998-03-25 2002-02-19 James A. Patterson Method for separating heavy isotopes of hydrogen oxide from water
GB0311153D0 (en) * 2003-05-15 2003-06-18 Otv Sa Ion-exchange process
US6984327B1 (en) 2004-11-23 2006-01-10 Patterson James A System and method for separating heavy isotopes of hydrogen oxide from water
US8266736B2 (en) * 2009-07-16 2012-09-18 Watkins Manufacturing Corporation Drop-in chlorinator for portable spas
US8273254B2 (en) * 2010-04-19 2012-09-25 Watkins Manufacturing Corporation Spa water sanitizing system
US8535540B2 (en) 2011-06-08 2013-09-17 Chandler Systems, Inc. Water softener system and method
US9403698B2 (en) 2012-09-17 2016-08-02 De Nora Water Technologies, Inc. Method and system for treating produced water
CN104496084A (zh) * 2014-12-26 2015-04-08 付学勇 一种厨房软水器
IT202100005336A1 (it) * 2021-03-08 2022-09-08 Versalis Spa Metodo per la preparazione di amidine.

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3021276A (en) * 1959-12-04 1962-02-13 Glenn L Mast Method and apparatus for reverse flow water softener regeneration
FR1352176A (fr) * 1962-12-04 1964-02-14 Degremont Perfectionnements apportés aux procédés de régénération des résines échangeuses d'ions et aux appareils échangeurs d'ions
US3398090A (en) * 1965-10-20 1968-08-20 Atlantis Water Treat Co Inc Ion exchange water treatment using vibratory agitation
US4181605A (en) * 1976-06-24 1980-01-01 Braswell John W Water softening system
US4184893A (en) * 1976-07-13 1980-01-22 E. I. Du Pont De Nemours And Company Pulsed rinse of particulate beds
US4202737A (en) * 1978-08-02 1980-05-13 Rohm And Haas Company Ion exchange process for desalination
DE2950728C2 (de) * 1979-12-17 1982-12-02 Gebrüder Heyl KG Gesellschaft für Analysentechnik, 3200 Hildesheim Verfahren zum zyklischen Regenerieren von Wasserenthärtungsanlagen und programmgesteuerte Wasserenthärtungsanlage zur Durchführung des Verfahrens
US4385992A (en) * 1981-06-29 1983-05-31 Autotrol Corporation Water softener control
NL8501676A (nl) * 1984-06-16 1986-01-16 Navire Cargo Gear Int Ab Luikafsluiting.
DE3528800A1 (de) * 1985-08-10 1987-02-12 Eumann Hanns Heinz Ionenaustauschvorrichtung

Also Published As

Publication number Publication date
BR8903045A (pt) 1990-02-06
ZA894669B (en) 1990-03-28
EP0347577A1 (fr) 1989-12-27
JPH0286849A (ja) 1990-03-27
CA1338241C (fr) 1996-04-09
ES2027810T3 (es) 1992-06-16
ATE68996T1 (de) 1991-11-15
DE3821036A1 (de) 1989-12-28
US5108616A (en) 1992-04-28
AU619561B2 (en) 1992-01-30
AU3663989A (en) 1990-01-04
DE58900411D1 (de) 1991-12-05

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